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<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>let 命令</title>
<script>
    // 解构嵌套数组赋值
    let [x, [y, [z]]] = [4, [5, [6]]];
    console.log(x, y, z); // 4 5 6
    </script>
 </head>
 <body></body>
 </html>